1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #pragma ident "%Z%%M% %I% %E% SMI" 27 28 /* 29 * Data-Link Driver 30 */ 31 32 #include <sys/conf.h> 33 #include <sys/mkdev.h> 34 #include <sys/modctl.h> 35 #include <sys/stat.h> 36 #include <sys/strsun.h> 37 #include <sys/dld.h> 38 #include <sys/dld_impl.h> 39 #include <sys/dls_impl.h> 40 #include <sys/vlan.h> 41 #include <inet/common.h> 42 43 /* 44 * dld control node state, one per open control node session. 45 */ 46 typedef struct dld_ctl_str_s { 47 minor_t cs_minor; 48 queue_t *cs_wq; 49 } dld_ctl_str_t; 50 51 static void drv_init(void); 52 static int drv_fini(void); 53 54 static int drv_getinfo(dev_info_t *, ddi_info_cmd_t, void *, void **); 55 static int drv_attach(dev_info_t *, ddi_attach_cmd_t); 56 static int drv_detach(dev_info_t *, ddi_detach_cmd_t); 57 58 /* 59 * Secure objects declarations 60 */ 61 #define SECOBJ_WEP_HASHSZ 67 62 static krwlock_t drv_secobj_lock; 63 static kmem_cache_t *drv_secobj_cachep; 64 static mod_hash_t *drv_secobj_hash; 65 static void drv_secobj_init(void); 66 static void drv_secobj_fini(void); 67 static void drv_ioc_secobj_set(dld_ctl_str_t *, mblk_t *); 68 static void drv_ioc_secobj_get(dld_ctl_str_t *, mblk_t *); 69 static void drv_ioc_secobj_unset(dld_ctl_str_t *, mblk_t *); 70 71 /* 72 * The following entry points are private to dld and are used for control 73 * operations only. The entry points exported to mac drivers are defined 74 * in dld_str.c. Refer to the comment on top of dld_str.c for details. 75 */ 76 static int drv_open(queue_t *, dev_t *, int, int, cred_t *); 77 static int drv_close(queue_t *); 78 79 static void drv_uw_put(queue_t *, mblk_t *); 80 static void drv_uw_srv(queue_t *); 81 82 dev_info_t *dld_dip; /* dev_info_t for the driver */ 83 uint32_t dld_opt = 0; /* Global options */ 84 static vmem_t *dld_ctl_vmem; /* for control minor numbers */ 85 86 static struct module_info drv_info = { 87 0, /* mi_idnum */ 88 DLD_DRIVER_NAME, /* mi_idname */ 89 0, /* mi_minpsz */ 90 (64 * 1024), /* mi_maxpsz */ 91 1, /* mi_hiwat */ 92 0 /* mi_lowat */ 93 }; 94 95 static struct qinit drv_ur_init = { 96 NULL, /* qi_putp */ 97 NULL, /* qi_srvp */ 98 drv_open, /* qi_qopen */ 99 drv_close, /* qi_qclose */ 100 NULL, /* qi_qadmin */ 101 &drv_info, /* qi_minfo */ 102 NULL /* qi_mstat */ 103 }; 104 105 static struct qinit drv_uw_init = { 106 (pfi_t)drv_uw_put, /* qi_putp */ 107 (pfi_t)drv_uw_srv, /* qi_srvp */ 108 NULL, /* qi_qopen */ 109 NULL, /* qi_qclose */ 110 NULL, /* qi_qadmin */ 111 &drv_info, /* qi_minfo */ 112 NULL /* qi_mstat */ 113 }; 114 115 static struct streamtab drv_stream = { 116 &drv_ur_init, /* st_rdinit */ 117 &drv_uw_init, /* st_wrinit */ 118 NULL, /* st_muxrinit */ 119 NULL /* st_muxwinit */ 120 }; 121 122 DDI_DEFINE_STREAM_OPS(drv_ops, nulldev, nulldev, drv_attach, drv_detach, 123 nodev, drv_getinfo, D_MP, &drv_stream); 124 125 /* 126 * Module linkage information for the kernel. 127 */ 128 129 extern struct mod_ops mod_driverops; 130 131 static struct modldrv drv_modldrv = { 132 &mod_driverops, 133 DLD_INFO, 134 &drv_ops 135 }; 136 137 static struct modlinkage drv_modlinkage = { 138 MODREV_1, 139 &drv_modldrv, 140 NULL 141 }; 142 143 int 144 _init(void) 145 { 146 int err; 147 148 drv_init(); 149 150 if ((err = mod_install(&drv_modlinkage)) != 0) 151 return (err); 152 153 return (0); 154 } 155 156 int 157 _fini(void) 158 { 159 int err; 160 161 if ((err = mod_remove(&drv_modlinkage)) != 0) 162 return (err); 163 164 if (drv_fini() != 0) { 165 (void) mod_install(&drv_modlinkage); 166 return (DDI_FAILURE); 167 } 168 169 return (err); 170 } 171 172 int 173 _info(struct modinfo *modinfop) 174 { 175 return (mod_info(&drv_modlinkage, modinfop)); 176 } 177 178 /* 179 * Initialize component modules. 180 */ 181 static void 182 drv_init(void) 183 { 184 dld_ctl_vmem = vmem_create("dld_ctl", (void *)1, MAXMIN, 1, 185 NULL, NULL, NULL, 1, VM_SLEEP | VMC_IDENTIFIER); 186 drv_secobj_init(); 187 dld_str_init(); 188 } 189 190 static int 191 drv_fini(void) 192 { 193 int err; 194 195 if ((err = dld_str_fini()) != 0) 196 return (err); 197 198 drv_secobj_fini(); 199 vmem_destroy(dld_ctl_vmem); 200 return (0); 201 } 202 203 /* 204 * devo_getinfo: getinfo(9e) 205 */ 206 /*ARGSUSED*/ 207 static int 208 drv_getinfo(dev_info_t *dip, ddi_info_cmd_t cmd, void *arg, void **resp) 209 { 210 if (dld_dip == NULL) 211 return (DDI_FAILURE); 212 213 switch (cmd) { 214 case DDI_INFO_DEVT2INSTANCE: 215 *resp = (void *)0; 216 break; 217 case DDI_INFO_DEVT2DEVINFO: 218 *resp = (void *)dld_dip; 219 break; 220 default: 221 return (DDI_FAILURE); 222 } 223 224 return (DDI_SUCCESS); 225 } 226 227 /* 228 * Check properties to set options. (See dld.h for property definitions). 229 */ 230 static void 231 drv_set_opt(dev_info_t *dip) 232 { 233 if (ddi_prop_get_int(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, 234 DLD_PROP_NO_FASTPATH, 0) != 0) { 235 dld_opt |= DLD_OPT_NO_FASTPATH; 236 } 237 238 if (ddi_prop_get_int(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, 239 DLD_PROP_NO_POLL, 0) != 0) { 240 dld_opt |= DLD_OPT_NO_POLL; 241 } 242 243 if (ddi_prop_get_int(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, 244 DLD_PROP_NO_ZEROCOPY, 0) != 0) { 245 dld_opt |= DLD_OPT_NO_ZEROCOPY; 246 } 247 } 248 249 /* 250 * devo_attach: attach(9e) 251 */ 252 static int 253 drv_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) 254 { 255 if (cmd != DDI_ATTACH) 256 return (DDI_FAILURE); 257 258 ASSERT(ddi_get_instance(dip) == 0); 259 260 drv_set_opt(dip); 261 262 /* 263 * Create control node. DLPI provider nodes will be created on demand. 264 */ 265 if (ddi_create_minor_node(dip, DLD_CONTROL_MINOR_NAME, S_IFCHR, 266 DLD_CONTROL_MINOR, DDI_PSEUDO, 0) != DDI_SUCCESS) 267 return (DDI_FAILURE); 268 269 dld_dip = dip; 270 271 /* 272 * Log the fact that the driver is now attached. 273 */ 274 ddi_report_dev(dip); 275 return (DDI_SUCCESS); 276 } 277 278 /* 279 * devo_detach: detach(9e) 280 */ 281 static int 282 drv_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) 283 { 284 if (cmd != DDI_DETACH) 285 return (DDI_FAILURE); 286 287 ASSERT(dld_dip == dip); 288 289 /* 290 * Remove the control node. 291 */ 292 ddi_remove_minor_node(dip, DLD_CONTROL_MINOR_NAME); 293 dld_dip = NULL; 294 295 return (DDI_SUCCESS); 296 } 297 298 /* 299 * dld control node open procedure. 300 */ 301 /*ARGSUSED*/ 302 static int 303 drv_open(queue_t *rq, dev_t *devp, int flag, int sflag, cred_t *credp) 304 { 305 dld_ctl_str_t *ctls; 306 minor_t minor; 307 queue_t *oq = OTHERQ(rq); 308 309 if (sflag == MODOPEN) 310 return (ENOTSUP); 311 312 /* 313 * This is a cloning driver and therefore each queue should only 314 * ever get opened once. 315 */ 316 if (rq->q_ptr != NULL) 317 return (EBUSY); 318 319 minor = (minor_t)(uintptr_t)vmem_alloc(dld_ctl_vmem, 1, VM_NOSLEEP); 320 if (minor == 0) 321 return (ENOMEM); 322 323 ctls = kmem_zalloc(sizeof (dld_ctl_str_t), KM_NOSLEEP); 324 if (ctls == NULL) { 325 vmem_free(dld_ctl_vmem, (void *)(uintptr_t)minor, 1); 326 return (ENOMEM); 327 } 328 329 ctls->cs_minor = minor; 330 ctls->cs_wq = WR(rq); 331 332 rq->q_ptr = ctls; 333 oq->q_ptr = ctls; 334 335 /* 336 * Enable the queue srv(9e) routine. 337 */ 338 qprocson(rq); 339 340 /* 341 * Construct a cloned dev_t to hand back. 342 */ 343 *devp = makedevice(getmajor(*devp), ctls->cs_minor); 344 return (0); 345 } 346 347 /* 348 * dld control node close procedure. 349 */ 350 static int 351 drv_close(queue_t *rq) 352 { 353 dld_ctl_str_t *ctls; 354 355 ctls = rq->q_ptr; 356 ASSERT(ctls != NULL); 357 358 /* 359 * Disable the queue srv(9e) routine. 360 */ 361 qprocsoff(rq); 362 363 vmem_free(dld_ctl_vmem, (void *)(uintptr_t)ctls->cs_minor, 1); 364 365 kmem_free(ctls, sizeof (dld_ctl_str_t)); 366 367 return (0); 368 } 369 370 /* 371 * DLDIOCATTR 372 */ 373 static void 374 drv_ioc_attr(dld_ctl_str_t *ctls, mblk_t *mp) 375 { 376 dld_ioc_attr_t *diap; 377 dls_vlan_t *dvp = NULL; 378 dls_link_t *dlp = NULL; 379 int err; 380 queue_t *q = ctls->cs_wq; 381 382 if ((err = miocpullup(mp, sizeof (dld_ioc_attr_t))) != 0) 383 goto failed; 384 385 diap = (dld_ioc_attr_t *)mp->b_cont->b_rptr; 386 diap->dia_name[IFNAMSIZ - 1] = '\0'; 387 388 if (dls_vlan_hold(diap->dia_name, &dvp, B_FALSE) != 0) { 389 err = ENOENT; 390 goto failed; 391 } 392 393 dlp = dvp->dv_dlp; 394 (void) strlcpy(diap->dia_dev, dlp->dl_name, sizeof (diap->dia_dev)); 395 diap->dia_vid = dvp->dv_id; 396 diap->dia_max_sdu = dlp->dl_mip->mi_sdu_max; 397 398 dls_vlan_rele(dvp); 399 miocack(q, mp, sizeof (dld_ioc_attr_t), 0); 400 return; 401 402 failed: 403 ASSERT(err != 0); 404 if (err == ENOENT) { 405 char devname[MAXNAMELEN]; 406 uint_t instance; 407 major_t major; 408 409 /* 410 * Try to detect if the specified device is gldv3 411 * and return ENODEV if it is not. 412 */ 413 if (ddi_parse(diap->dia_name, devname, &instance) == 0 && 414 (major = ddi_name_to_major(devname)) != (major_t)-1 && 415 !GLDV3_DRV(major)) 416 err = ENODEV; 417 } 418 miocnak(q, mp, 0, err); 419 } 420 421 422 /* 423 * DLDIOCVLAN 424 */ 425 typedef struct dld_ioc_vlan_state { 426 uint_t bytes_left; 427 dld_ioc_vlan_t *divp; 428 dld_vlan_info_t *vlanp; 429 } dld_ioc_vlan_state_t; 430 431 static int 432 drv_ioc_vlan_info(dls_vlan_t *dvp, void *arg) 433 { 434 dld_ioc_vlan_state_t *statep = arg; 435 436 /* 437 * passed buffer space is limited to 65536 bytes. So 438 * copy only the vlans associated with the passed link. 439 */ 440 if (strcmp(dvp->dv_dlp->dl_name, statep->divp->div_name) == 0 && 441 dvp->dv_id != 0) { 442 if (statep->bytes_left < sizeof (dld_vlan_info_t)) 443 return (ENOSPC); 444 445 (void) strlcpy(statep->vlanp->dvi_name, 446 dvp->dv_name, IFNAMSIZ); 447 statep->divp->div_count++; 448 statep->bytes_left -= sizeof (dld_vlan_info_t); 449 statep->vlanp += 1; 450 } 451 return (0); 452 } 453 454 static void 455 drv_ioc_vlan(dld_ctl_str_t *ctls, mblk_t *mp) 456 { 457 dld_ioc_vlan_t *divp; 458 dld_ioc_vlan_state_t state; 459 int err = EINVAL; 460 queue_t *q = ctls->cs_wq; 461 mblk_t *bp; 462 463 if ((err = miocpullup(mp, sizeof (dld_ioc_vlan_t))) != 0) 464 goto failed; 465 466 if ((bp = msgpullup(mp->b_cont, -1)) == NULL) 467 goto failed; 468 469 freemsg(mp->b_cont); 470 mp->b_cont = bp; 471 divp = (dld_ioc_vlan_t *)bp->b_rptr; 472 divp->div_count = 0; 473 state.bytes_left = MBLKL(bp) - sizeof (dld_ioc_vlan_t); 474 state.divp = divp; 475 state.vlanp = (dld_vlan_info_t *)(divp + 1); 476 477 err = dls_vlan_walk(drv_ioc_vlan_info, &state); 478 if (err != 0) 479 goto failed; 480 481 miocack(q, mp, sizeof (dld_ioc_vlan_t) + 482 state.divp->div_count * sizeof (dld_vlan_info_t), 0); 483 return; 484 485 failed: 486 ASSERT(err != 0); 487 miocnak(q, mp, 0, err); 488 } 489 490 /* 491 * DLDIOCHOLDVLAN 492 */ 493 static void 494 drv_hold_vlan(dld_ctl_str_t *ctls, mblk_t *mp) 495 { 496 queue_t *q = ctls->cs_wq; 497 dld_hold_vlan_t *dhv; 498 mblk_t *nmp; 499 int err; 500 dls_vlan_t *dvp; 501 502 nmp = mp->b_cont; 503 if (nmp == NULL || MBLKL(nmp) < sizeof (dld_hold_vlan_t)) { 504 err = EINVAL; 505 miocnak(q, mp, 0, err); 506 return; 507 } 508 dhv = (dld_hold_vlan_t *)nmp->b_rptr; 509 510 if ((err = dls_vlan_hold(dhv->dhv_name, &dvp, B_TRUE)) != 0) { 511 miocnak(q, mp, 0, err); 512 return; 513 } 514 515 if ((err = dls_vlan_setzoneid(dhv->dhv_name, dhv->dhv_zid, 516 dhv->dhv_docheck)) != 0) { 517 dls_vlan_rele(dvp); 518 miocnak(q, mp, 0, err); 519 } else { 520 miocack(q, mp, 0, 0); 521 } 522 } 523 524 /* 525 * DLDIOCRELEVLAN 526 */ 527 static void 528 drv_rele_vlan(dld_ctl_str_t *ctls, mblk_t *mp) 529 { 530 queue_t *q = ctls->cs_wq; 531 dld_hold_vlan_t *dhv; 532 mblk_t *nmp; 533 int err; 534 535 nmp = mp->b_cont; 536 if (nmp == NULL || MBLKL(nmp) < sizeof (dld_hold_vlan_t)) { 537 err = EINVAL; 538 miocnak(q, mp, 0, err); 539 return; 540 } 541 dhv = (dld_hold_vlan_t *)nmp->b_rptr; 542 543 if ((err = dls_vlan_setzoneid(dhv->dhv_name, dhv->dhv_zid, 544 dhv->dhv_docheck)) != 0) { 545 miocnak(q, mp, 0, err); 546 return; 547 } 548 549 if ((err = dls_vlan_rele_by_name(dhv->dhv_name)) != 0) { 550 miocnak(q, mp, 0, err); 551 return; 552 } 553 554 miocack(q, mp, 0, 0); 555 } 556 557 /* 558 * DLDIOCZIDGET 559 */ 560 static void 561 drv_ioc_zid_get(dld_ctl_str_t *ctls, mblk_t *mp) 562 { 563 queue_t *q = ctls->cs_wq; 564 dld_hold_vlan_t *dhv; 565 mblk_t *nmp; 566 int err; 567 568 nmp = mp->b_cont; 569 if (nmp == NULL || MBLKL(nmp) < sizeof (dld_hold_vlan_t)) { 570 err = EINVAL; 571 miocnak(q, mp, 0, err); 572 return; 573 } 574 dhv = (dld_hold_vlan_t *)nmp->b_rptr; 575 576 if ((err = dls_vlan_getzoneid(dhv->dhv_name, &dhv->dhv_zid)) != 0) 577 miocnak(q, mp, 0, err); 578 else 579 miocack(q, mp, sizeof (dld_hold_vlan_t), 0); 580 } 581 582 /* 583 * Process an IOCTL message received by the control node. 584 */ 585 static void 586 drv_ioc(dld_ctl_str_t *ctls, mblk_t *mp) 587 { 588 uint_t cmd; 589 590 cmd = ((struct iocblk *)mp->b_rptr)->ioc_cmd; 591 switch (cmd) { 592 case DLDIOCATTR: 593 drv_ioc_attr(ctls, mp); 594 return; 595 case DLDIOCVLAN: 596 drv_ioc_vlan(ctls, mp); 597 return; 598 case DLDIOCSECOBJSET: 599 drv_ioc_secobj_set(ctls, mp); 600 return; 601 case DLDIOCSECOBJGET: 602 drv_ioc_secobj_get(ctls, mp); 603 return; 604 case DLDIOCSECOBJUNSET: 605 drv_ioc_secobj_unset(ctls, mp); 606 return; 607 case DLDIOCHOLDVLAN: 608 drv_hold_vlan(ctls, mp); 609 return; 610 case DLDIOCRELEVLAN: 611 drv_rele_vlan(ctls, mp); 612 return; 613 case DLDIOCZIDGET: 614 drv_ioc_zid_get(ctls, mp); 615 return; 616 default: 617 miocnak(ctls->cs_wq, mp, 0, ENOTSUP); 618 return; 619 } 620 } 621 622 /* 623 * Write side put routine of the dld control node. 624 */ 625 static void 626 drv_uw_put(queue_t *q, mblk_t *mp) 627 { 628 dld_ctl_str_t *ctls = q->q_ptr; 629 630 switch (mp->b_datap->db_type) { 631 case M_IOCTL: 632 drv_ioc(ctls, mp); 633 break; 634 default: 635 freemsg(mp); 636 break; 637 } 638 } 639 640 /* 641 * Write-side service procedure. 642 */ 643 void 644 drv_uw_srv(queue_t *q) 645 { 646 mblk_t *mp; 647 648 while (mp = getq(q)) 649 drv_uw_put(q, mp); 650 } 651 652 /* 653 * Secure objects implementation 654 */ 655 656 /* ARGSUSED */ 657 static int 658 drv_secobj_ctor(void *buf, void *arg, int kmflag) 659 { 660 bzero(buf, sizeof (dld_secobj_t)); 661 return (0); 662 } 663 664 static void 665 drv_secobj_init(void) 666 { 667 rw_init(&drv_secobj_lock, NULL, RW_DEFAULT, NULL); 668 drv_secobj_cachep = kmem_cache_create("drv_secobj_cache", 669 sizeof (dld_secobj_t), 0, drv_secobj_ctor, NULL, 670 NULL, NULL, NULL, 0); 671 drv_secobj_hash = mod_hash_create_extended("drv_secobj_hash", 672 SECOBJ_WEP_HASHSZ, mod_hash_null_keydtor, mod_hash_null_valdtor, 673 mod_hash_bystr, NULL, mod_hash_strkey_cmp, KM_SLEEP); 674 } 675 676 static void 677 drv_secobj_fini(void) 678 { 679 mod_hash_destroy_hash(drv_secobj_hash); 680 kmem_cache_destroy(drv_secobj_cachep); 681 rw_destroy(&drv_secobj_lock); 682 } 683 684 static void 685 drv_ioc_secobj_set(dld_ctl_str_t *ctls, mblk_t *mp) 686 { 687 dld_ioc_secobj_set_t *ssp; 688 dld_secobj_t *sobjp, *objp; 689 int err = EINVAL; 690 queue_t *q = ctls->cs_wq; 691 692 if ((err = miocpullup(mp, sizeof (dld_ioc_secobj_set_t))) != 0) 693 goto failed; 694 695 ssp = (dld_ioc_secobj_set_t *)mp->b_cont->b_rptr; 696 sobjp = &ssp->ss_obj; 697 698 if (sobjp->so_class != DLD_SECOBJ_CLASS_WEP) 699 goto failed; 700 701 if (sobjp->so_name[DLD_SECOBJ_NAME_MAX - 1] != '\0' || 702 sobjp->so_len > DLD_SECOBJ_VAL_MAX) 703 goto failed; 704 705 rw_enter(&drv_secobj_lock, RW_WRITER); 706 err = mod_hash_find(drv_secobj_hash, (mod_hash_key_t)sobjp->so_name, 707 (mod_hash_val_t *)&objp); 708 if (err == 0) { 709 if ((ssp->ss_flags & DLD_SECOBJ_OPT_CREATE) != 0) { 710 err = EEXIST; 711 rw_exit(&drv_secobj_lock); 712 goto failed; 713 } 714 } else { 715 ASSERT(err == MH_ERR_NOTFOUND); 716 if ((ssp->ss_flags & DLD_SECOBJ_OPT_CREATE) == 0) { 717 err = ENOENT; 718 rw_exit(&drv_secobj_lock); 719 goto failed; 720 } 721 objp = kmem_cache_alloc(drv_secobj_cachep, KM_SLEEP); 722 (void) strlcpy(objp->so_name, sobjp->so_name, 723 DLD_SECOBJ_NAME_MAX); 724 725 err = mod_hash_insert(drv_secobj_hash, 726 (mod_hash_key_t)objp->so_name, (mod_hash_val_t)objp); 727 ASSERT(err == 0); 728 } 729 bcopy(sobjp->so_val, objp->so_val, sobjp->so_len); 730 objp->so_len = sobjp->so_len; 731 objp->so_class = sobjp->so_class; 732 rw_exit(&drv_secobj_lock); 733 miocack(q, mp, 0, 0); 734 return; 735 736 failed: 737 ASSERT(err != 0); 738 miocnak(q, mp, 0, err); 739 740 } 741 742 typedef struct dld_secobj_state { 743 uint_t ss_free; 744 uint_t ss_count; 745 int ss_rc; 746 dld_secobj_t *ss_objp; 747 } dld_secobj_state_t; 748 749 /* ARGSUSED */ 750 static uint_t 751 drv_secobj_walker(mod_hash_key_t key, mod_hash_val_t *val, void *arg) 752 { 753 dld_secobj_state_t *statep = arg; 754 dld_secobj_t *sobjp = (dld_secobj_t *)val; 755 756 if (statep->ss_free < sizeof (dld_secobj_t)) { 757 statep->ss_rc = ENOSPC; 758 return (MH_WALK_TERMINATE); 759 } 760 bcopy(sobjp, statep->ss_objp, sizeof (dld_secobj_t)); 761 statep->ss_objp++; 762 statep->ss_free -= sizeof (dld_secobj_t); 763 statep->ss_count++; 764 return (MH_WALK_CONTINUE); 765 } 766 767 static void 768 drv_ioc_secobj_get(dld_ctl_str_t *ctls, mblk_t *mp) 769 { 770 dld_ioc_secobj_get_t *sgp; 771 dld_secobj_t *sobjp, *objp; 772 int err = EINVAL; 773 uint_t extra = 0; 774 queue_t *q = ctls->cs_wq; 775 mblk_t *bp; 776 777 if ((err = miocpullup(mp, sizeof (dld_ioc_secobj_get_t))) != 0) 778 goto failed; 779 780 if ((bp = msgpullup(mp->b_cont, -1)) == NULL) 781 goto failed; 782 783 freemsg(mp->b_cont); 784 mp->b_cont = bp; 785 sgp = (dld_ioc_secobj_get_t *)bp->b_rptr; 786 sobjp = &sgp->sg_obj; 787 788 if (sobjp->so_name[DLD_SECOBJ_NAME_MAX - 1] != '\0') 789 goto failed; 790 791 rw_enter(&drv_secobj_lock, RW_READER); 792 if (sobjp->so_name[0] != '\0') { 793 err = mod_hash_find(drv_secobj_hash, 794 (mod_hash_key_t)sobjp->so_name, (mod_hash_val_t *)&objp); 795 if (err != 0) { 796 ASSERT(err == MH_ERR_NOTFOUND); 797 err = ENOENT; 798 rw_exit(&drv_secobj_lock); 799 goto failed; 800 } 801 bcopy(objp->so_val, sobjp->so_val, objp->so_len); 802 sobjp->so_len = objp->so_len; 803 sobjp->so_class = objp->so_class; 804 sgp->sg_count = 1; 805 } else { 806 dld_secobj_state_t state; 807 808 state.ss_free = MBLKL(bp) - sizeof (dld_ioc_secobj_get_t); 809 state.ss_count = 0; 810 state.ss_rc = 0; 811 state.ss_objp = (dld_secobj_t *)(sgp + 1); 812 mod_hash_walk(drv_secobj_hash, drv_secobj_walker, &state); 813 if (state.ss_rc != 0) { 814 err = state.ss_rc; 815 rw_exit(&drv_secobj_lock); 816 goto failed; 817 } 818 sgp->sg_count = state.ss_count; 819 extra = state.ss_count * sizeof (dld_secobj_t); 820 } 821 rw_exit(&drv_secobj_lock); 822 miocack(q, mp, sizeof (dld_ioc_secobj_get_t) + extra, 0); 823 return; 824 825 failed: 826 ASSERT(err != 0); 827 miocnak(q, mp, 0, err); 828 829 } 830 831 static void 832 drv_ioc_secobj_unset(dld_ctl_str_t *ctls, mblk_t *mp) 833 { 834 dld_ioc_secobj_unset_t *sup; 835 dld_secobj_t *objp; 836 mod_hash_val_t val; 837 int err = EINVAL; 838 queue_t *q = ctls->cs_wq; 839 840 if ((err = miocpullup(mp, sizeof (dld_ioc_secobj_unset_t))) != 0) 841 goto failed; 842 843 sup = (dld_ioc_secobj_unset_t *)mp->b_cont->b_rptr; 844 if (sup->su_name[DLD_SECOBJ_NAME_MAX - 1] != '\0') 845 goto failed; 846 847 rw_enter(&drv_secobj_lock, RW_WRITER); 848 err = mod_hash_find(drv_secobj_hash, (mod_hash_key_t)sup->su_name, 849 (mod_hash_val_t *)&objp); 850 if (err != 0) { 851 ASSERT(err == MH_ERR_NOTFOUND); 852 err = ENOENT; 853 rw_exit(&drv_secobj_lock); 854 goto failed; 855 } 856 err = mod_hash_remove(drv_secobj_hash, (mod_hash_key_t)sup->su_name, 857 (mod_hash_val_t *)&val); 858 ASSERT(err == 0); 859 ASSERT(objp == (dld_secobj_t *)val); 860 861 kmem_cache_free(drv_secobj_cachep, objp); 862 rw_exit(&drv_secobj_lock); 863 miocack(q, mp, 0, 0); 864 return; 865 866 failed: 867 ASSERT(err != 0); 868 miocnak(q, mp, 0, err); 869 } 870